ASTROSAT CZTI

Data Quality Report

Orbit 39368

Creation date: 2024-06-27T22:03:44.183575
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_018T01_9000005470_39368cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39368cztM0_level2_quad_clean.evt
Size (bytes)1,000,016,640199,704,960
Size953.7 MB 190.5 MB
Events in quadrant A6,261,4421,377,784
Events in quadrant B5,758,8311,404,913
Events in quadrant C6,648,4001,311,799
Events in quadrant D17,373,5881,080,397

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264193
B0261642
C0276272
D0605072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12613250.198208%
B12613440.348846%
C126131040.824546%
D12613219517.402680%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 15330 12615 7 7 0.05% 0.06%
B 15330 12615 17 17 0.11% 0.13%
C 15330 12615 83 83 0.54% 0.66%
D 15330 12615 2225 2225 14.51% 17.64%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 875542 3127.61 1379 1350 279.5
A 3 1 20189 67.4 1379 1350 279.5
A 13 254 19600 65.29 1379 1350 279.5
B 5 200 186296 704.75 1369 1328 262.5
B 4 170 55274 205.54 1369 1328 262.5
B 15 35 43980 162.51 1369 1328 262.5
C 15 214 518123 1658.29 1341 1350 311.6
C 14 254 429783 1374.81 1341 1350 311.6
C 9 187 247187 788.87 1341 1350 311.6
D 12 235 11287996 36128.58 1280 1244 312.4
D 13 249 522993 1670.1 1280 1244 312.4
D 2 249 208185 662.41 1280 1244 312.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter